Technical requirements for the operation of microgrids in both interconnected and islanded mode Working group CIRED 2018-03

Considering the significant increase in projects and initiatives in Europe on microgrids connected to the distribution grid, CIRED launched a working group to address the topic of the technical requirements for the operation of microgrids in both interconnected and islanded modes. The work of this working group started in January 2019 and finished in February 2021. This paper summarizes the content of the report. It aims at providing recommendations on lessons learned from a selected representative and complementary panel of real-life existing demonstration (mostly full scale). The group also took advantage of past projects from where real site conclusions were obtained as well as the expertise within the working group, to guarantee a report with practical conclusions on top of a synthetic state of art. Several microgrid demonstration were identified as top tier projects, covering a wide scope of applications. Among others, the WG studied the deployed assets, the modes of operation, the obtained results and conclusions and mostly the technical lessons learned, i.e., what would be needed to generalize such demonstrator in a daily life operation of a distribution grid (mostly excluding economic, social and environmental criteria).